Question

For a particle performing a U.C.M. the acceleration is
a) Constant in direction
b) Constant in magnitude but not in the direction
c) Constant in magnitude and direction
d) Constant in neither magnitude nor in direction

Please answer asap

Answer 1

Answer:

b)Constant in magnitude but not in direction.

Explanation:

Answer 2

For a particle performing a U.C.M. the acceleration is Constant in magnitude but not in the direction.(option - b)

• In uniform circulation motion, acceleration is constant in magnitude as only centripetal force (one force) is acting towards the center.
• F = ma ( F- force, m - mass, a - acceleration)
• a = F/m ( force and mass are constant ∴ acceleration is also constant as no external force is acting on the body).
• Direction is not constant as the body keeps moving in a circle, at each point on the circle, the direction of motion keeps changing.