A block of 200   g mass moves with a uniform speed in a horizontal circular groove, with vertical side…

A block of 200 g mass moves with a uniform speed in a horizontal circular groove, with vertical side walls of radius 20 cm. If the block takes 40 s to complete one round, the normal force by the side walls of the groove is:
  1. 0.0314 N
  2. 9.859×10-2 N
  3. 6.28×10-3 N
  4. 9.859×10-4 N

Solution

N=mω2R

Given m=0.2 kg,T=40 S,R=0.2 m

Put values in equation 1

N=9.859×10-4 N

Asked in: JEE Main 2021 (16 Mar Shift 1)

Practice more Motion In Two Dimensions questions on Aicharya