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 circular path
Solution
The given case is of uniform circular motion, in which speed of kinetic energy remains constant. Direction of velocity and acceleration keep on changing although its magnitude remains constant.
∴ Correct option are (c) and (d).
∴ Correct option are (c) and (d).
Create a free account to view solution
View Solution FreeMore Work, Power and Energy Questions
A mass of 20 kg moving with a speed of 10 m/s collides with another stationary mass of 5 kg. As a result of the collisio...Consider two process A and B on a system as shown in the figure let ᐃW1 and ᐃW2 be the work done by the syst...A metal ball does not rebound when struck on a wall, whereas a rubber ball of same mass when thrown with the same veloci...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...A spherical black body with a radius of 12 cm radiates 450 watt power at 500 K. If the radius were halved and the temper...