A body of mass 80 g is moving with a constant velocity of 4 cm/s on a horizontal frictionless table. The force on the body (in dynes) is :-
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A body of mass 80 g is moving with a constant velocity of 4 cm/s on a horizontal frictionless table. The force on the body (in dynes) is :-
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Answer:
0
Explanation:
the answer is 0 because it is a friction less table. where there is no friction there is no force because friction causes the force. therefore 0 N.
The force on the body = 0
Given :
A body of mass 80 g is moving with a constant velocity of 4 cm/s on a horizontal frictionless table
To find :
The force on the body
Solution :
Step 1 of 2 :
Calculate acceleration of the body
Here it is given that the body is moving with a constant velocity of 4 cm/s
Now, Acceleration is defined as the rate of change of the velocity of an object with respect to time
∴ Acceleration of the body = a = 0
Step 2 of 2 :
Calculate force on the body
Mass of the body = m = 80 g
According to Newton's second law of motion, the force acting on an body is equal to the product of its mass and acceleration.
∴ The force on the body
= F
= ma
= (80 × 0) dynes
= 0
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