Work, Power and EnergyHard
Question
A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that
Options
A.its velocity is constant
B.its acceleration is constant
C.its kinetic energy is constant
D.it moves in a straight line.
Solution
When a force of constant magnitude which is always perpendicular to the velocity of the particle acts on a particle, the work done and hence change in kinetic energy is zero.
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
If a spring extends by x on loading then energy stored by the spring is :- (T is tension in the spring)If a spring exten...During melting of a ice slab at 273 K at atmospheric pressure:...Two masses of 1 gm an 4 gm are moving with the same kinetic energy. The ratio of their linear momentum will be -...A heavy nucleus at rest breaks into two fragments which fly off with velocities 8 : 1. The ratio of radii of the fragmen...A 1000 kg elevator rises from rest in the basement to the fourth floor, a distance of 20 m. As it passes the fourth floo...