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A trolley that moves along a horizontal beam is acted upon by two forces as shown.
(a) Knowing that a 5 25°, determine by trigonometry the magnitude of the force P so that the resultant force exerted on the trolley is vertical.
(b) What is the corresponding magnitude of the resultant?
The mass then travels vertically and it takes 1.10 s for the mass to reach the top of its trajectory. Determine the spring constant, in N/m. (Use g=9.81 m/s2). Assume that the time required for the spring to reach its full extension is negligible.
An engine absorbs 1.67 kJ from a hot reservoir at 277°C and expels 1.18 kJ to a cold reservoir at 27°C in each cycle, How much work is done by the engine in each cycle
Light of wavelength 418 nm is incident normally on a film of water 1.0 µm thick. The index of refraction of water is 1.33. What is the wavelength of the light in the water
What is magnitude of the runners total displacement
Two point charges 0.606 m apart experience a repulsive force of 0.368 N. The sum of the two charges equals 1.08 10-5 C
A rotating wheel requires 3.09-s to rotate through 37.0 revolutions. calculate the constant angular acceleration of the wheel
An optical disk drive in your computer can spin a disk up to 10,000 rpm (about 1045 rad / s), what is the magnitude of the average angular acceleration of the disk
A torque of 11Nm is applied to a heavy wheel whose moment of inertia is 34 kgm2. What is the angular acceleration of the wheel
A 82 person sits on a 3.8 chair. Each leg of the chair makes contact with the floor in a circle that is 1.4 in diam. Determine out the pressure exerted on the floor by each leg of the chair, Assume the weight is evenly distributed.
A cylindrical copper rod of length 1.2 m and cross-sectional area 4.8 cm2 is insulated to prevent heat loss through its surface, Find the rate at which heat is transferred along the rod
A hang glider and its pilot have a total mass equal to 119 kg. While executing a 360° turn, What is the net force on the hang glider
What is the new acceleration of box
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