Question

A 70kg man pushed a 50kg man by aforce of 50Newton by what force has the 50kg man pushed the other man

Answer 1

Given condition,

Mass of the man = 70kg

(F) Force used by the man to push another man of mass 50 kg = 50 N.

Normal reaction act on 50 kg man = mass × acceleration due to gravity.

= 50 × 10 N

= 500 N

Using the Formula, Friction = r N ,

where,

N is normal reaction,

r is coefficient of static friction

In Ideal Condition, Frictional Force = Normal Reaction Force.

∴ 50 = r × N

50 = r × 500

⇒ r = 0.1

∴ coefficient of static Friction = 0.1

Let the Force acting on the man of mass 50 kg by the man of mass 70 kg be x.

∴ x = static Friction

x = coefficient of static friction × normal reaction act on 70 kg man

x = 0.1 × 70 × 10

x = 70 N

Hence, the Force of 70 N acts on the body of mass 50 kg by the man of 70 kg is 70 N.

Hope it helps.