A block of mass m, = 1.55 kg and a block of mass m, = 5.65 kg are connected by a massless string over a pulley in the shape of a solid disk having radius R = 0.250 m and mass M = 10.0 kg. The shaped ramp makes an angle of 8 = 30.0° as shown in the figure. The coefficient of kinetic friction is 0.360 for both blocks. М. R (a) Draw force diagrams of both blocks and of the pulley. Choose File No file chosen (b) Determine the acceleration of the two blocks. (Enter the magnitude of the acceleration.) ]m/s2 (c) Determine the tensions in the string on both sides of the pulley. left of the pulley N right of the pulley N

Hand written solutions are strictly prohibited.

Two blocks of mass m 10 kg and mg 5 kg are connected by a massless string that passes over a pulley as shown in the figure. The system is in static equilibrium. There is friction between m and the inclined surface (4=0.4). Neglect the friction between the string and the pulley. Determine the static friction force in the system. 10 kg 5.0 kg 37 49 0 N 29.3 N 39.2 N 33.9 N 9.98 N

An Atwood machine consists of a pair of masses attached to each other by a cord that passes over a pulley.  Assume the pulley and the cord are ideal.  If m1= 100 g and m2 = 0.15 kg, then what is the tension in the cord and what is the acceleration of the blocks (include the acceleration's direction)?

An object of mass m is constrained to move on a horizontal frictionless circular track of radius m starts fIrom rest at time t = 0 and thereafter is puushed by an external force with constant magnitude F, always horizontal and tangent to the track. The horizontal component of the force exerted by the track on the object is given by А. О В. F C. Ft/mR D. Ft2/mR E. F/mg ans: D

In a simple Atwood’s machine, two 396-N weight are attached to the ends of a cord overhanging a frictionless pulley. A small mass, m, is attached to one of the two blocks causing it to move down 152.4 cm in 2.00 seconds, staring from rest. Determine the mass.

A girl is playing with a doll that weighs m = 0.65 kg. She places the doll r = 0.15 m from the centre of a disk rotating at ω = 24 rpm. The coefficient of static friction between the doll and the disk is µs = 0.25. (a) Draw a free-body diagram of the doll.  (b) What is the maximum magnitude of the force of static friction?   (c) Does the doll stay in place on the rotating disk? Take g = 9.81 m/s2 and show all your work.

In the figure, a 1.70 kg ball is connected by means of two massless strings, each of length L = 1.13 m, to a vertical, rotating rod. The strings are tied to the rod with separation d = 1.13 m and are taut. The tension in the upper string is 59.0 N. What are (a) the tension in the lower string, (b) the magnitude of the net force F net on the ball, and (c) the speed of the ball? d Rotating rod (a) Number Units (b) Number Units (c) Number Units

When a person stands on tiptoe (a strenuous position), the position of the foot is as shown in Figure a. The total gravitational force on the body, F, is supported by the force g' n exerted by the floor on the toes of one foot. A mechanical model of the situation is shown in Figure b, where T is the force exerted by the Achilles tendon on the foot and R is the force exerted by the tibia on the foot. Find the values of T, R, and 0 when F = n = 780 N. (For 0, enter the smaller of the two possible values between 0° and 90°.) -Achilles tendon Tibia 15.0° 18.0 cm 25.0 cm b T = R =

Two blocks of mass m, = 10 kg and mg =5 kg are connected by a massless string that passes over a pulley as MA shown in the figure. The system is in static equilibrium. There is friction between m, and the inclined surface (30.4). Neglect the friction between the string and the pulley. Determine the static friction force in the system. 10 kg 5.0 kg 37 49.0 N 29.3 N 39.2 N 33.9 N O 9.98 N