Question

B. Give short answers.
1. Name the force used to pull a trolley.
2. What are the various sources of energy.
3. Name some simple machines.
4. How are force and work related to each other?​

Answer 1

1. contact force

2. Heat,Light ,Sound

3. Lever, Pulley,

4. Work = Force × Displacement

Answer 2

Answer:

1. Muscular force is used to pull a trolley.

2. Solar energy, Wind energy , Geothermal energy, Hydrogen energy etc...

3. There are six simple machines:

✓. Inclind plane

✓. Wheel and Axle

✓. Lever

✓. Pully

✓. Screw

✓. Wedge

4. force and work are related to each other as Force is applied to do work.

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