normal force
A crate rests on a horizontal surface and a woman pulls on it with a 10 N force. Rank the situations shown below according to the magnitude of the normal forceexerted by the surface on the crate, least to greatest.
Homework Answers
Normal force decreases if an external force has a greater component of force in the +ve y direction.
24. A particle is on a smooth horizontal plane. A force graph is given. Then: F...
24. A particle is on a smooth horizontal plane. A force graph is given. Then: F is applied w hose F vs t A) at t, the acceleration is constant B) initially body must be in rest C) at t, the acceleration is constant D) initially acceleration is zero E) Both C) and D) are correct. 25. A crate rests on a horizontal surface and a woman pulls on it with a 10 N force. Rank the situations shown below...
15. A 12-kg crate rests on a horizontal surface and a boy pulls on it with...
15. A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30° below the horizontal. If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is: A) 44 N B) 47 N C) 54 N D) 56 N E) 71 N
Estimate the magnitude of the normal force n acting on an apple that rests on a...
Estimate the magnitude of the normal force n acting on an apple that rests on a flat surface. nr N Estimate the magnitude of the normal force on the apple when the surface is tilted at an angle of 24° with respect to to the horizontal. n N
When an object rests on a surface, there is always a force perpendicular to the surface; we call this the normal force,...
When an object rests on a surface, there is always a force
perpendicular to the surface; we call this the normal force,
denoted by . The two questions to the right will explore the normal
force.
figure A
figure B
A man attempts to pick up his suitcase of
weight by pulling straight up on the handle. (Part A
figure) However, he is unable to lift the suitcase from the floor.
Which statement about the magnitude of the normal force...
A woman exerts a horizontal force of 141 N on a crate with a mass of...
A woman exerts a horizontal force of 141 N on a crate with a mass of 30.7 kg (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)? (b) What is the minimum possible value of the coefficient of static friction between the crate and the foor? (ASsume the crate remains stationary.) A block of mass 59.1 kg rests on a slope having an angle of elevation of 20.3. If pushing downhill on the...
MULTIPLE CHOICE, Show your work in the space provided, Circle the correct answer 1. An object...
MULTIPLE CHOICE, Show your work in the space provided, Circle the correct answer 1. An object is moving with constant non-zero velocity. Which of the following statements about it must be true? As shown in the figure, a woman is straining to lift a large crate, but without success because it is too heavy. We denote the forces on the crate as follows: P is the magnitude of the upward force being exerted on the crate by the person, C...
1.) a.) A 29-kg crate rests on a horizontal floor, and a 58-kg person is standing...
1.) a.) A 29-kg crate rests on a horizontal floor, and a 58-kg person is standing on the crate. (i) Determine the magnitude of the normal force that the floor exerts on the crate. N (ii) Determine the magnitude of the normal force that the crate exerts on the person. N b.) A Mercedes-Benz 300SL (m = 1600 kg) is parked on a road that rises 20° above the horizontal. (i) What is the magnitude of the normal force? N...
1) Force acting on the object is 6 N. The object is moving with acceleration of...
1) Force acting on the object is 6 N. The object is moving with acceleration of 3 m/s. When the object's acceleration is doubled, the net force would be, A) 3N B) 6N C) 9N D) 12N E) I8N 2) A push of magnitude P acts on a box of weight Was shown in the figure. The push is directed at an angle 0 below the horizontal, and the box remains a rest. The box rests on a horizontal surface...
A 313-kg crate rests on a surface that is inclined above the horizontal at an angle...
A 313-kg crate rests on a surface that is inclined above the horizontal at an angle of 17.0°. A horizontal force (magnitude = 414 N and parallel to the ground, not the incline) is required to start the crate moving down the incline. What is the coefficient of static friction between the crate and the incline?
Problem 3.24 What is the magnitude of the force he must exert on the rope in...
Problem 3.24 What is the magnitude of the force he must exert on the rope in case a? Figure 1) Express your answer with the appropriate units. Constants The person wants to cause the 240 lb crate to start sliding toward the right. To achieve this, the horizontal component of the force exerted on the crate times the normal force exerted on the crate by the floor. In Fig. a, the person pulls on the rope in the direction shown....
24. A particle is on a smooth horizontal plane. A force graph is given. Then: F is applied w hose F vs t A) at t, the acceleration is constant B) initially body must be in rest C) at t, the acceleration is constant D) initially acceleration is zero E) Both C) and D) are correct. 25. A crate rests on a horizontal surface and a woman pulls on it with a 10 N force. Rank the situations shown below...
15. A 12-kg crate rests on a horizontal surface and a boy pulls on it with a force that is 30° below the horizontal. If the coefficient of static friction is 0.40, the minimum magnitude force he needs to start the crate moving is: A) 44 N B) 47 N C) 54 N D) 56 N E) 71 N
Estimate the magnitude of the normal force n acting on an apple that rests on a flat surface. nr N Estimate the magnitude of the normal force on the apple when the surface is tilted at an angle of 24° with respect to to the horizontal. n N
When an object rests on a surface, there is always a force
perpendicular to the surface; we call this the normal force,
denoted by . The two questions to the right will explore the normal
force.
figure A
figure B
A man attempts to pick up his suitcase of
weight by pulling straight up on the handle. (Part A
figure) However, he is unable to lift the suitcase from the floor.
Which statement about the magnitude of the normal force...
A woman exerts a horizontal force of 141 N on a crate with a mass of 30.7 kg (a) If the crate doesn't move, what's the magnitude of the static friction force (in N)? (b) What is the minimum possible value of the coefficient of static friction between the crate and the foor? (ASsume the crate remains stationary.) A block of mass 59.1 kg rests on a slope having an angle of elevation of 20.3. If pushing downhill on the...
MULTIPLE CHOICE, Show your work in the space provided, Circle the correct answer 1. An object is moving with constant non-zero velocity. Which of the following statements about it must be true? As shown in the figure, a woman is straining to lift a large crate, but without success because it is too heavy. We denote the forces on the crate as follows: P is the magnitude of the upward force being exerted on the crate by the person, C...
1) Force acting on the object is 6 N. The object is moving with acceleration of 3 m/s. When the object's acceleration is doubled, the net force would be, A) 3N B) 6N C) 9N D) 12N E) I8N 2) A push of magnitude P acts on a box of weight Was shown in the figure. The push is directed at an angle 0 below the horizontal, and the box remains a rest. The box rests on a horizontal surface...
Problem 3.24 What is the magnitude of the force he must exert on the rope in case a? Figure 1) Express your answer with the appropriate units. Constants The person wants to cause the 240 lb crate to start sliding toward the right. To achieve this, the horizontal component of the force exerted on the crate times the normal force exerted on the crate by the floor. In Fig. a, the person pulls on the rope in the direction shown....
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