Question

A rope is being used to pull a mass of 10 kg vertically upward. Determine the tension or

he rope, if starting from rest, the mass acquires a velocity of 4 ms'in 8s (g=10ms'l
​

Answer 1

105N

Step-by-step explanation:

first calculate the acceleration of the mass

a = v/t

a = 4/8

a = 0.5m/s².

therefore

T = m(a+g)

T = 10(0.5+10)

T = 10(10.5)

T = 105N.

Answer 2

The correct answer is - 105 N.

Step-by-step explanation:

Given -

Mass = 10 kg upward

velocity = 4 ms'in 8s

Tension = Force of gravity + acceleration force

T = mg + ma

=
`\((4 - 0)/(8)\)`

=
`0.5 ms\(^(-2)\)`

Tension =
`\(10 * 10 + 10 * 0.5\)`

= 100 + 5

= 105N

Thus, the correct answer is : 105 N.