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A toy chest and its contents have a combined weight ofW= 200 N. The coefficient of static friction between toy chest and floorμsis 0.450. The child in the figure attempts to move the chest across the floor by pulling on an attached rope.(a)Ifθis 43.0°, what is the magnitude of the force that the child must exert on the rope to put the chest on the verge of moving? Determine(b)the value ofθfor whichFis a minimum and(c)that minimum magnitude.
What is the smallest radius of an unbanked (flat) track around which a bicyclist can travel if her speed is 29.0 km/h and the coefficient of static friction between tires and track is 0.320? The bicyclist, bicycle and tires are all to the right of the center of the track. Treat the bicyclist, bicycle and tires as one object.
A student of weight 627 N rides a steadily rotating Ferris wheel (the student sits upright). At the highest point, the magnitude of the normal force on the student from the seat is 565 N. (a) What is the magnitude of at the lowest point? If the wheel's speed is doubled, what is the magnitude FN at the (b) highest and (c) lowest point?
The potential dissimilarity between the plates of a capacitor is 220 V. Midway among the plates, a proton and an electron are released. The electron is released from rest. The proton is projected perpendicularly toward the negative plate by an initia..
A model airplane with mass 0.740 kg is tethered to the ground by a wire so that it flies in a horizontal circle 30.2 m in radius. Find the magnitude of the angular acceleration of the airplane
questionhuman blood contains plasma platelets and blood cells. to part plasma from other components centrifugation is
Suppose a block with mass 2.70 kg is resting on a ramp. If the coefficient of static friction between the block and the ramp is 0.310, Find the maximum static friction force that acts on the block
question two people start at the same place and walk around a circular lake in opposite directions. one has an angular
a brick is thrown upward from the top of a building at an angle of 25 degrees to the horizontal and with an initial
C harged particle(m=6 g,q=-10x10-6 q)moves in a region of uniform field along a helical path (radius = 2.0 cm, pitch = 7.0 cm) as shown. Identify the angle between the velocity of the particle and the magnetic field?
How fast is the object moving immediately
A thick, vertical iron pipe has an inner diameter of 0.065 meter. A thin aluminum disk, heated to a temperature of 85oC, has a diameter that is 3.9 x 10-5 meter greater than the pipe inner diameter. Evaluate the temperature of the aluminum disk
a 70-kg astronaut is space-walking outside the space capsule and is stationary when the tether line breaks. as a means
Water is moving at a velocity of 1.50 m/s through a hose with an internal diameter of 1.60 cm. What is the flow rate in liters per second
A 5 kg mass is connected to a spring (1000 N/m) platform which undergoes simple harmonic motion in the vertical direction with two complete oscillations each second. What is the speed of the box at the equilibrium position
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