Advertisements
Advertisements
प्रश्न
Explain the meaning of the following equation :
F = m x a
where symbols have their usual meanings
उत्तर
The given equation gives us a relationship between 'force' and 'acceleration' according to the Newton's second law of motion.
F = m × a
where,
m = mass of a body
a = acceleration of the body
F = force acting on the body
APPEARS IN
संबंधित प्रश्न
An automobile vehicle has a mass of 1500 kg. What must be the force between the vehicle and road if the vehicle is to be stopped with a negative acceleration of 1.7 m s−2?
How much momentum will a dumb-bell of mass 10 kg transfer to the floor if it falls from a height of 80 cm? Take its downward acceleration to be 10 m s−2.
Two persons manage to push a motorcar of mass 1200 kg at a uniform velocity along a level road. The same motorcar can be pushed by three persons to produce an acceleration of 0.2 m s−2. With what force does each person push the motorcar? (Assume that all persons push the motorcar with the same muscular effort.)
A hammer of mass 500 g, moving at 50 ms−1, strikes a nail. The nail stops the hammer in a very short time of 0.01 s. What is the force of the nail on the hammer?
A car of mass 2400 kg moving with a velocity of 20 m s-1 is stopped in 10 seconds on applying brakes. Calculate the retardation and the retarding force.
How long will it take a force of 10 N to stop a mass of 2.5 kg which is moving at 20 m/s ?
State and explain Newton’s second law of motion.
Complete a sentence and explain it.
During a collision, ______ remains constant.
Deduce the equation of a force using Newton’s second law of motion.
Two blocks each of mass m lie on a smooth table. They are attached to two other masses as shown in the figure. The pulleys and strings are light. An object O is kept at rest on the table. The sides AB and CD of the two blocks are plane and made reflecting. The acceleration of two images formed in those two reflecting surfaces with respect to each other is ______.