Question

(b) A body weighing 98N is found to weigh 70N when taken to planet P. If the acceleration due to gravity on the earth's surface is 9.8N/Kg. Calculate the gravitational acceleration on the surface of the planet P.​

Answer 1

To calculate the gravitational acceleration on planet P, divide the weight on planet P by the mass of the body.

Step-by-step explanation:

To calculate the gravitational acceleration on the surface of planet P, we can use the formula:

Weight = mass x gravitational acceleration

On Earth, the weight of the body is 98N, and the acceleration due to gravity is 9.8N/kg. So, we can write the equation as:

98N = mass x 9.8N/kg

From this equation, we can find the mass of the body as:

mass = 98N / 9.8N/kg = 10kg

When the body is taken to planet P, its weight becomes 70N. Using the same formula, we can find the gravitational acceleration on planet P as:

70N = 10kg x gravitational acceleration on planet P

From this equation, we can find the gravitational acceleration on planet P as:

gravitational acceleration on planet P = 70N / 10kg = 7N/kg

Answer 2

7 N/kg

Step-by-step explanation:

Weight equals mass times acceleration due to gravity.

W = mg

98 N = m (9.8 N/kg)

m = 10 kg

W = mg

70 N = (10 kg) g

g = 7 N/kg