Force of friction depends on mcq
WebFeb 9, 2024 · The rate of change of momentum is equal to the force applied. b. For every reaction, there is an opposite reaction. c. The body tends to be rotated if the force is applied tangentially. d. The body is rest until a force is applied. Ans8. (b) For every reaction, there is an opposite reaction.
Force of friction depends on mcq
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WebOct 3, 2024 · Force and Pressure Class 8 MCQs Questions with Answers Choose the correct option. Question 1. The pressure which is exerted by air around us is known as (a) force (b) atmospheric pressure (c) muscular … WebMar 3, 2024 · (c) Friction is a force that only occurs on rough surfaces (d) Friction is a force that occurs only between solids Answer Question 4. Talcum powder should not be spilled on the floor of room because: (a) it will stain the floor (b) it may cause us to slip and fall (c) it is messy (d) none of these Answer Question 5.
WebThe force of friction is a force that resists motion when two objects are in contact. If you look at the surfaces of all objects, there are tiny bumps and ridges. Those microscopic peaks and valleys catch on to one another … Webreduce the force acting between the 2 surfaces. reduce the roughness of the 2 surfaces coming in contact. use wax, grease or oil. all of the above are ways of reducing friction. …
WebFriction - Mechanical Engineering (MCQ) questions and answers. 1) Which motion has magnitude of static frictional force directly proportional to normal reaction? a. Actual … WebA 5 kg box is at rest on the floor. The coefficient of static friction between the box and the floor is 0.4. A horizontal force of 50 N is applied to the box. Will it move? No, because …
Weba) Restoring force b) Friction c) Neither restoring force nor friction d) Both restoring force and friction 1 15 Acceleration due to gravity —-----with altitude. a. Increases b. Decreases c. No change d. None of the above 1 Directions: These questions consist of two statements,each printed as Assertion and Reason. While answering these
WebHere, we are discussing 12 more MCQs of Fluid Dynamics in Physics. 1. What does fluid means? ... Cohesive force (d) Viscosity (e) None of these. Answer: (d) 5. The formula of friction force F in a liquid was first suggested by ... 10. Drage force between layers under consideration depends (a) The surface area of the layer (b) The distance ... the gioi hoan my tap 80Web30 Questions Show answers. Q. A type of friction that occurs when air pushes against a moving object causing it to decelerate. Q. The amount of friction depends on the weight … the gioi hoan my tap 89WebNov 9, 2024 · The coefficient of friction depends on the material and roughness of the two surfaces in contact. The limiting frictional force is proportional to the normal force that acts between the bodies in contact. The ratio of frictional force to the normal reaction is constant and is known as the coefficient of friction i.e. μ = F/N. the gioi hoan my tap 84WebYes, because the applied force is more than the maximum limiting static friction. 50. A skier with a mass of 67 kg is skiing down a snowy slope with an incline of 37°. Find the friction if the coefficient of kinetic friction is 0.07. 27.66 N 34.70 N 36.71 N 45.96 N 5.5 Simple Harmonic Motion 51. the arrangement condominiumsWebMay 22, 2024 · MCQ worksheet – Friction or frictional force 1) Friction occurs because a. all surfaces have some roughness. b. surfaces in contact generate heat. c. chemical reactions take place when surfaces touch. d. none of the above 2 ) Which factors affect friction? a. roughness of the surfaces b. area of the surfaces the gioi hoan my tap 94WebMCQ Tests with Answers for Class 8 Science Chapter 12. Q1. Four children were asked to arrange forces due to rolling, static and sliding friction in a decreasing order. The correct arrangement is: [A]. Rolling, Static, Sliding. [B]. Rolling, Sliding, Static. [C]. the gioi hoan my tap 90WebFriction is a force that is dependent on external factors. Following are the two factors on which friction depends: 1. On the nature of the two surfaces that are in contact Friction is dependent on the smoothness or roughness of the two surfaces that are in … the gioi hoan my tap 96