Question

C. State whether
the following statements
are True or False:-
1. A lock is an example of lever of first order.
2. Machines are used for doing dangerous works
only.
3. The energy supplied to a machine in doing some
mechanical work is called input energy.
4. A hand grinder is an example of a pulley.
5. In case of a car a steering wheel is an example of
pulley​

Answer 1

Explanation:

1) true

2) false

3)true

4)false

5)not sure

Answer 2

Answer:

1. False

2. False

3. True

4. False

5. True