Question

How much force is needed to pull an object of mass 40kg in vertically upward direction with acceleration of 2.2m/s2

Answer 1

F = 40× 2.2
=88 N
so it required 88 N force

Answer 2

A force of  88N can be required to pull the block.

SOLUTION:

The force here in the given situation is required to pull the block, so it is a pulling force. Thus the force will be that of tension.

Where T is the tension, ‘a’ is the acceleration and g is the gravitational force.

Using Newton’s second law and applying to the diagram.

Net force = ma

Where ‘m’ refers the mass and ‘a’ refers acceleration.

Substituting m = 40 kg and $a=2.2 \frac{m}{s^{2}}$

$F=40 \times 2.2$

F=88N

Therefore the force required to pull the block is 88 N.