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Consider the following statements 1. The electrostatic force is an example of a contact force. 2. The frictional force is an example of a contact force. 3. The nuclear force is an example of a contact force. Which of the following statements is/are correct?
The elastic potential energy of a body is
1. Work done by the external force against the deforming force.
2. Work done against the external force by the deforming force.
3. The sum of work done by the external force and the deforming force.
Which one option is true?
Certain facts about Force are given below. Identify the true information. A. Force is a scalar quantity. B. Gravitational force is the weakest force. C. Electromagnetic force is the strongest force. D. When sum of all forces acting on a body is zero, the body is said to be in a state of equilibrium.
In this question, the first and last sentences of the passage are numbered 1 and 6. The rest of the passage is split into four parts and named P, Q, R, and S. These four parts are not given in their proper order. Read the sentence and find out which of the four combinations is correct. S1: A force exists between everybody in the universe. P: Normally it is very small but when one of the bodies is a planet, like earth, the force is considerable. Q: It has been investigated by many scientists including Galileo and Newton. R: Everything on or near the surface of the earth is attracted by the mass of the earth. S: This gravitational force depends on the mass of the bodies involved. S6: The greater the mass, the greater is the earth's force of attraction on it. We can call this force of attraction gravity. The Proper sequence should be:
Which of the following statements regarding laws governing the friction between dry surfaces are correct? 1. The friction force is dependent on the velocity of sliding.  2. The friction force is directly proportional to the normal force. 3. The friction force is dependent on the materials of the contact surfaces. 4. The Friction force is independent of the area of contact surfaces.
Given below are certain facts about the “gravitational force”. Identify the INCORRECT one. A. Gravitational force depends on the intervening medium between the objects. B. Gravitational force is a type of conservative force. C. The gravitational force between two particles acts perpendicular to the line joining the two particles.
S1:A force of exists between everybody in the universe.
P :Normally it is very small but when the one of the bodies is a planet, like earth, the force is considerable.
Q :It has been investigated by many scientists including Galileo and Newton.
R :Everything on or near the surface of the earth is attracted by the mass of earth.
S :This gravitational force depends on the mass of the bodies involved.
S6:The greater the mass, the greater is the earth's force of attraction on it. We can call this force of attraction gravity.

The Proper sequence should be:
Which of the following forces are measured directly by strain gauges or force dynamometers during metal cutting? 1. Force exerted by the tool on the chip acting normally to the tool face 2. Horizontal cutting force exerted by the tool on the workpiece 3. Frictional resistance of the tool against the chip flow acting along the tool face 4. Vertical force which helps in holding the tool in position Select the correct answer using the codes given below.
Consider the following statement for a ball falling in a viscous fluid: a) The viscous force is directly proportional to the radius of the ball b) The viscous force is directly proportional to the velocity of the ball c) The viscous force is inversely proportional to the radius of the ball d) The viscous force is inversely proportional to the velocity of the ball Which of the above statements are correct?
Which of the following is contact force/forces? I. Friction force II. Magnetic force III. Gravitation force