plz give ans of 1,2,3,4,5
Answers
A push or pull can be known as force,No it is not necessary that two bodies will always in contact while applying force
For example
1Electrstatic force
2Gravitational force
3Megnatic force
Hi there,
Answer:- 1
1) Force can be defined as a push or a pull which changes or tends to changes the motion or rest or shape or size of the body.
No, it is not required that bodies should be in physical contact.
Examples of Non- Contact force:- Gravitational, Magnetic, Electrostatic force e.t.c.
Answer:- 2
The three effects of Force are:-
=> The state of motion or rest gets changed. e.x.:- ball
=> It changes the shape or size of a body. e.x.:- Spring
=> It helps the body in motion to get some M.A. e.x. Pulley
Answer:- 3
a) Snowshoes do not exert a large amount of force on snow and they are force sustainer hence they are used to walk on snow.
b) It acts as a force Sustainer.
c) As it exerts more force on the object.
d) Longer arm reduces the force.
Moment = Force * Arm.
e) As it focuses all the force at one place and it has sharper boundaries.
f) Due to Body Temperature at high altitude. (Calorimetry)
g) For reducing the force implied by the heavy winds.
Answer:- 4
Rod A will not sink as it has lesser weight and mass and it implies less force on the sand.
Force = mass * acceleration.
Answer:- 5
The hole A will exert the water with great pressure rather than B and C.
Hope it Helps...