A fire helicopter carries a 555-kg bucket of water at the end of a 20.0-m long cable. Flying back from a fire at a constant speed of 40.0 m/s, the cable makes an angle of 42.0° with respect to the vertical. Determine the force exerted by air resistance on the bucket.

m1 A block with mass m, = 8.8 kg is on an incline with an angle 8 = 22° with respect to the horizontal. For the first question there is no friction, but for the rest of this problem the coefficients of friction are: H, = 0.2 and u, = 0.22. 1) When there is no friction, what is the magnitude of the acceleration of the block? m/s Submit You currentiy have O submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 2) Now with friction, what is the magnitude of the acceleration of the block after it begins to slide down the plane? m/s Submit You currently have O submissions for this question. Only 5 submission are allowed. You can make 5 more submissions for this question. 3) m, To keep the mass from accelerating, a spring is attached. What is the minimum spring constant of the spring to keep the block from sliding if it extends x = 0.13 m from its unstretched length. N/m Submit You currently have O submissions for this question. Only…

Suppose a 66.5 kg gymnast climbs a rope. What is the tension in the rope if she climbs at a constant speed? tension: N What is the tension in the rope if she accelerates upward at a rate of 1.65 m/s? tension: N

Calculate the magnitude of a normal force on a 22.7 kg block in the following circumstances. a. the block is resting on a level surface. b. the block is resting on a surface tilted up at 40.8 degrees with respect to the horizontal. c. the block is resting on the floor of an elevator that is accelerating upward at 2.53 m.s^2 d. the block is on the level surface and a force of 115 N is exerted on it at an angle of 40.8 degrees below the horizontal.

Please help with all parts, it is one question.   A. Two blocks are positioned on surfaces, each inclined at the same angle of 50.3 degrees with respect to the horizontal. The blocks are connected by a rope which rests on a frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass of the black block is 4.97 kg, and the coefficient of kinetic friction for both blocks and inclines is 0.200. Assume static friction has been overcome and that everything can slide. What is must be the mass of the white block if both blocks are to slide to the RIGHT at a constant velocity?        4.26 kg        6.95 kg        3.55 kg        4.97 kgB. Two blocks are positioned on surfaces, each inclined at the same angle of 45.1 degrees with respect to the horizontal. The blocks are connected by a rope which rests on a frictionless pulley at the top of the inclines as shown, so the blocks can slide together. The mass of the black block is 7.86 kg, and the coefficient…

A 32 kg crate rests on a horizontal floor, and a 61 kg person is standing on the crate.(a) Determine the magnitude of the normal force that the floor exerts on the crate. N(b) Determine the magnitude of the normal force that the crate exerts on the person. N

Two packing crates of masses m1 = 10.0 kg and m2 = 6.00 kg are connected by a light string that passes over a frictionless pulley as in the figure below. The 6.00 kg crate lies on a smooth incline of angle 39.0°. Find the acceleration of the 6.00 kg crate. m/s2 (up the incline)Find the tension in the string. N

A car moving at 30 m/s crashes into a tree and stops in 0.3 s. Calculate the force the seat belt exerts on a passenger in the car to bring him to a halt. The mass of the passenger is 84 kg. (Enter the magnitude.) N

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Especially part C