Question

5. Different masses are hung on a spring scale calibrated in Newtons.
W(weight) = Given mass in Kg X Gravitational force (9.8 N/Kg)
a. The force exerted by gravity on 1 kg = 9.8 N.
b. The force exerted by gravity on 5 kg = ______ N.
c. The force exerted by gravity on _______ kg = 98 N.
d. The force exerted by gravity on 70 kg = ________ N.

Answer 1

b. 49N
c. 10 kg
d. 68.6 kg

Answer 2

Answer:

The answers for the following given blanks are as follows:

b) 49 N c) 10 kg d) 686N

Explanation:

The formula to calculate the Weight (W) is given as follows:

Weight(W) = The given mass (in Kg) X Gravitational force (9.8 N/Kg)

b) The force exerted by the gravity on 5 Kg = 5 Kg × 9.8 N/Kg

                                                                         = 49 N

Therefore the answer is 49 N.

c) The force exerted by the gravity on the  ______ kg = 98 N

Given mass = Weight / Gravitational force

Given mass =$\frac{98N}{9.8N/Kg}$

Given mass = 10 Kg

Therefore 10 Kg is the answer.

d) The force exerted by gravity on 70 kg = 70 Kg × 9.8 N/Kg

                                                                    =686 N

Therefore the answer is 686 N.