Question 13. A rescue helicopter is lifting a man (weight = 877.22 N) from a capsized boat by means of a cable and harness. (a) What is the tension in the cable when the man is given an initial upward acceleration of 1.36 m/s²? (b) What is the tension during the remainder of the rescue when he is pulled upward at a constant velocity? Ans: 999 N; 877 N around fron spel & moitu ting one end of a nylon rope

You are having a fun day at the snow and have done lots of sledding. It is now time to retrun to your warm cabin and you must pull your 10 kg sled across the horizontal snow surface for a about 200 m. You do this at constant velocity and the kinetic friction, uk, between sled and snow is 0.10. (a) What is the tension in the rope? (b) What is the normal force with which the snow pushes vertically upward on the sled?

An elevator (mass 4850 kg) is to be designed so that the maximum acceleration is 0.0680g. What are the maximum and minimum forces the motor should exert on the supporting cable? In solving it , 1 was added to the acceleration when it was going up and subtracted when it is going down and I am confused on why.

A 16.4kg mass is being lowered by a rope. The mass is accelerating downward with an acceleration of magnitude 1.663. Determine the tension in the rope (in N). 9.8m as the s² magnitude of the acceleration of gravity) (use g =

A sled is on a horizontal surface and a rope with tension T is pulling on it at an angle e above the horizontal. The sled had mass M and does not move due to the frictional force. In this case the coefficient of friction is ug. In terms of the variables given and g, what is the magnitude of the frictional force in this case? Select one: O a. Tcose O b. H, Mgsin0 Ос. Tsin® O d. H, Mgcose

ol nt... 7 2 W S 6. A mass m₁ = 4.80 kg block on a tabletop is attached by a string to a hanging block of mass m₂ = 3.00 kg, as shown in the figure. The coefficient of kinetic friction between the mass (m₁) and the surface is 0.29. The blocks are released from rest and allowed to move freely. Find the magnitude of the tension in the string. N 3 E 80 F3. 4 288 R F % 5 246 T G 6 16 ceil6 ceil6 ceil6 ceil6 cesto co B 21910291999 MacBook Air FO Y & 7 m₂ H U 8 J FB ( 9 M K 16 ceiló cerlo ceiló cel cc116 ceil6 ccilo ceiló ceilo O 4 16. cci P

THE MASSES Ma and Mb SLIDE ON THE SMOOTH INCLINED PLANES (WITHOUT FRICTION). DETERMINE  A FORMULA FOR THE ACCELERATION OF THE SYSTEM IN TERMS OF mA,mB θA, θB AND g. B) IF θA= 32, θB=23 AND mA= 5.0kg, what value of MBwill keep the system at rest? What would be the tension in the string in this case (neglect mass)?

You bring a bathroom scale onto an elevator and press "up". Your mass is 65 kg. If the bathroom scale reads 750 N, (a) what is the acceleration of the elevator? You then press down and the acceleration downward is of the same magnitude. (b) While accelerating downward, you hold a small mass of 100 g attached to a string. What is the tension in the string? This elevator is in the new BU Data Science building where g = 10 m/s². Your work should include free body diagrams

An elevator cab that weighs 22.2 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.08 m/s? and (b) decreasing at a rate of 1.08 m/s? (a) Number i Units (b) Number i Units

An elevator cab that weighs 28.6 kN moves upward. What is the tension in the cable if the cab's speed is (a) increasing at a rate of 1.36 m/s? and (b) decreasing at a rate of 1.36 m/s?? (a) Number i Units (b) Number i Units