Work done

Amount of workdone on a body depends on two factors

• Magnitude of the force applied

• Magnitude of displacement

• Both of the above

• None of the above

Workdone is maximum when the force acts on the normal surface is indicated by the formula

The S.I unit of work is:

• Joule

• erg

• Newton

• Dyne

One horse power is equal to

• 1000 W

• 500 W

• 764 W

• 746 W

1 Joule is equivalent to ____ erg

• 1

S.I unit of power is

• Watt

• Joule

• Nm

• Nms

Power is expressed as

• 0

• positive

• negative

• none of these

When a body moves in a circular path in a horizontal plane, the work done is

• positive

• negative

• zero

• maximum