if the force of 10N is applied on two surfaces each with thje accelaration of 5ms-2 and 15ms-2. if the accelaration of both of the body is tied up then find the total accelaration.

Asked by Petulla Mishra | 16th Nov, 2014, 07:39: PM

Expert Answer:

According to the second law of motion, we have

m1 = F/a1; and
m2 = F/a2.

Here,

a1 = 5 m s-2;
a2= 15 m s-2 and

F = 10 N.


Thus,

m1 = 10 N / 5 m s-2

     = 2 kg


m2 = 10 N / 15 m s-2

     = 0.67 kg


If the two masses were tied together then the total mass, 'm'; would be
m = m1 + m2

    = 2 kg + 0.67 kg = 2.67 kg.

The total acceleration, 'a' produced in the combined mass by the 10 N force would be,
a = F / m

   = 10 N / 2.67 kg

   = 3.74 m s-2

Answered by Faiza Lambe | 17th Nov, 2014, 07:12: AM