(b) Find an expression for the acceleration and the contact force of block 1 on

Question

(b) Find an expression for the acceleration and the contact force of block 1 on block 2 in terms of F, m1 and m2
(c) What is the acceleration and the contact force of if F = 3.2 N, m1 = 2.0 kg and m2 = 6.0kg.

Two blocks are in contact on a frictionless horizontal surface. The blocks are accelerated by a single horizontal force Frightarrow applied to one of them. Find an expression for the acceleration and the contact force of block 1 on block 2 in terms of F, m1 and m2 What is the acceleration and the contact force of if F = 3.2 N, m1 = 2.0 kg and m2 = 6.0kg.

Explanation / Answer

b)F = (m1+m2)*a

a = F/(m1+m2)


contaoct force, Fc = m1*a - F

Fc = m1*a - (m1+m2)*a = -m2*a

c) a = 3.2/(2+6) = 0.4 m/s^2

Fc = m2*a = 6*0.4 = 2.4 N

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