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Physics-

General

Easy

Question

If the thickness of the wire is doubled, then the breaking force in the above question will be

$6 F$
$4 F$
$8 F$
$F$

The correct answer is: $4 F$

Breaking force $proportional to pi r to the power of 2 end exponent$
If thickness (radius) of wire is doubled then breaking force will become four times

Related Questions to study

The Young’s modulus of the material of a wire is $2 cross times 10 to the power of 10 end exponent N m to the power of negative 2 end exponent.$ If the elongation strain is $1 percent sign$ , then the energy stored in the wire per unit volume in $J m blank to the power of negative 3 end exponent$ is

The Young’s modulus of the material of a wire is $2 cross times 10 to the power of 10 end exponent N m to the power of negative 2 end exponent.$ If the elongation strain is $1 percent sign$ , then the energy stored in the wire per unit volume in $J m blank to the power of negative 3 end exponent$ is

physics-General

The following data were obtained when a wire was stretched within the elastic region Force applied to wire 100 N
Area of cross-section of wire $10 to the power of negative 6 end exponent m to the power of 2 end exponent$
Extensional of wire $2 cross times 10 to the power of negative 9 end exponent m$
Which of the following deductions can be correctly made from this data?
I. The value of Young’s Modulus is $10 to the power of 11 end exponent N blank m to the power of negative 2 end exponent$
II. The strain is $10 to the power of negative 3 end exponent$
III. The energy stored in the wire when the load is applied is 10 J

The following data were obtained when a wire was stretched within the elastic region Force applied to wire 100 N
Area of cross-section of wire $10 to the power of negative 6 end exponent m to the power of 2 end exponent$
Extensional of wire $2 cross times 10 to the power of negative 9 end exponent m$
Which of the following deductions can be correctly made from this data?
I. The value of Young’s Modulus is $10 to the power of 11 end exponent N blank m to the power of negative 2 end exponent$
II. The strain is $10 to the power of negative 3 end exponent$
III. The energy stored in the wire when the load is applied is 10 J

physics-General

Which of the following relations is true

Which of the following relations is true

physics-General

parallel

A particle moves from A to B and then it moves from to as shown in figure. Calculate the ratio between path length and displacement.

A particle moves from A to B and then it moves from to as shown in figure. Calculate the ratio between path length and displacement.

If $A equals open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell 1 0 1 end cell row cell 2 1 0 end cell row cell 3 2 1 end cell end table close square brackets$ then det A=

If $A equals open square brackets table attributes columnalign left left left columnspacing 1em end attributes row cell 1 0 1 end cell row cell 2 1 0 end cell row cell 3 2 1 end cell end table close square brackets$ then det A=

$open vertical bar table attributes columnalign center center center columnspacing 1em end attributes row 1 w cell w squared end cell row w cell w squared end cell 1 row cell w squared end cell 1 w end table close vertical bar equals$

$open vertical bar table attributes columnalign center center center columnspacing 1em end attributes row 1 w cell w squared end cell row w cell w squared end cell 1 row cell w squared end cell 1 w end table close vertical bar equals$

parallel

Frame of reference is a ... and a ···.. from where an observer takes his observation,

Frame of reference is a ... and a ···.. from where an observer takes his observation,

To locate the position of the particle we need

To locate the position of the particle we need

Mechanics is a branch of physics. This branch is ...

Mechanics is a branch of physics. This branch is ...

parallel

A branch of physics dealing with motion without considering its causes is known as ....

A branch of physics dealing with motion without considering its causes is known as ....

A Particle of mass m is at rest at t=0 The force exerting on it in x-direction is F(t)=F_ae^-k. Which one of the following graph is of speed

A Particle of mass m is at rest at t=0 The force exerting on it in x-direction is F(t)=F_ae^-k. Which one of the following graph is of speed

As shown in figure a block of mass m is attached with a cart. If the coefficient of static friction between the surface of cart and block is µ than what would be accelcration a of cart to prevent the falling of block ?

As shown in figure a block of mass m is attached with a cart. If the coefficient of static friction between the surface of cart and block is µ than what would be accelcration a of cart to prevent the falling of block ?

parallel

A block B. placed on a horizontal surface is pulled with initial velocity V. If the coefficient of kinetic friction between surface and block is µ . than after bons much time, block will come to rest ?

A block B. placed on a horizontal surface is pulled with initial velocity V. If the coefficient of kinetic friction between surface and block is µ . than after bons much time, block will come to rest ?

An impulsive force of 100 N acts on a body for 1 sec What is the change in its linear momentum ?

An impulsive force of 100 N acts on a body for 1 sec What is the change in its linear momentum ?

If $f colon R not stretchy rightwards arrow R$ defined by $f left parenthesis x right parenthesis equals fraction numerator e to the power of x squared end exponent minus e to the power of negative x squared end exponent over denominator e to the power of x squared end exponent plus e to the power of negative x squared end exponent end fraction text , then end text f text is end text$

If $f colon R not stretchy rightwards arrow R$ defined by $f left parenthesis x right parenthesis equals fraction numerator e to the power of x squared end exponent minus e to the power of negative x squared end exponent over denominator e to the power of x squared end exponent plus e to the power of negative x squared end exponent end fraction text , then end text f text is end text$

parallel

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