Which of the following is not the unit of work?
EASY
Earn 100

What should the angle be between force F and displacement S in order for work done to be zero?
(a)90 degree
(b)45 degree
(c)60 degree
(d)0 degree

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Important Questions on Work, Power and Energy
MEDIUM


EASY

MEDIUM

HARD
A force is applied upon a body of 40 kg then its velocity increases from 1
metre/second to 2 metre/second. Determine work done by the force.

HARD

EASY


HARD


MEDIUM

EASY


MEDIUM
A heater coil connected to a supply of a 220 V is dissipating some power \( P_1 \) . The coil is cut into half and the two halves are connected in parallel. The heater now dissipates a power \( P_2 \). Find the ratio of power \( P_1 \) : \( P_2 \).


HARD

MEDIUM

EASY


