Physics
Grade-7
Easy
Question
What is the mass of the object?
- 0. 50 kg
- 0.66 kg
- 1 kg
- 1.5 kg
Hint:
When the height is 2m and the GPE is 135, the mass of the object is 0.66 Kg.
The correct answer is: 0.66 kg
- The gravitational potential energy GPE= mgh.
- The mass of an object can be derived from the GPE formulation.
- GPE = 135
h = 2 m
GPE = mgh
13 = m × 9.8 × 2
m = 
= 0.66 kg
Related Questions to study
Physics
What is the value of the gravitational potential energy when the height of the object is
6 m
What is the value of the gravitational potential energy when the height of the object is
6 m
PhysicsGrade-7
Physics
What is the value of the gravitational potential energy when the height of the object is
4 m
What is the value of the gravitational potential energy when the height of the object is
4 m
PhysicsGrade-7
Physics
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming –
The diagram shows a complete circuit with a battery and a buzzer making noise. This circuit works by transforming –
PhysicsGrade-7
Physics
What changes electrical energy into light and sound energy?
What changes electrical energy into light and sound energy?
PhysicsGrade-7
Physics
A hairdryer converts --
A hairdryer converts --
PhysicsGrade-7
Physics
Which items would have this energy transformation: chemical energy -> muscular energy?
Which items would have this energy transformation: chemical energy -> muscular energy?
PhysicsGrade-7
Physics
Traffic light
Traffic light
PhysicsGrade-7
Physics
Scissors
Scissors
PhysicsGrade-7
Physics
Hammer
Hammer
PhysicsGrade-7
Physics
Gears of car
Gears of car
PhysicsGrade-7
Physics
Which energy is being used by the following appliance initially?
Which energy is being used by the following appliance initially?
PhysicsGrade-7
Physics
Identify the energy which is being possessed by the object.
Identify the energy which is being possessed by the object.
PhysicsGrade-7
Physics
Identify the correct step of the transformation of energy in a torch
Identify the correct step of the transformation of energy in a torch
PhysicsGrade-7
Physics
A battery converts what type of energy to another?
A battery converts what type of energy to another?
PhysicsGrade-7
Physics
Which energy transformation occurs in a toaster?
Which energy transformation occurs in a toaster?
PhysicsGrade-7
