Question

The momentum P (in kg m/s) of a body is varying with time t (in s) as P = 3t^3 + 2t^2 + 1. Force acting on the particle at t = 1 second will be -:
a) 6N
b)13N
c)36N
d)15N

Answer 1

Answer:

36N

Explanation:

Time (t) = 1s (given)

P = 3t^3 + 2t^2 + 1

Put the value of 't' in the formula.

P = 3(1)^3 + 2(t)^2 + 1

= 3^3 + 2^2 + 1

= 27 + 8 + 1

= 36