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Two identical uniform spheres A and B each having a mass 𝑴= 𝟏.𝟎𝟎 [kg] and distance 0.800 [m] between them, are placed 𝟎.𝟓𝟎𝟎 [m] away from another spherical mass C (𝒎=𝟎.𝟑𝟎𝟎 [kg]). If mass C is released from rest, what is its net acceleration? Assume that only the gravitational forces from spheres A and B act on C.
Determine the threshold frequency in a metal with work function of 2.5ev
if a load of 200° is moved up an inclined plane at an angle 30° to the horizontal using a machine of efficiency of 80%.calculate the effort applied
Determine the image distance formed by a convex lens of focal length 4 cm where the object is at 3 cm.
A 4 𝑘𝑔 chunk of ice is sliding to the right at 20 𝑚/𝑠 in a frictionless floor completely covered with ice. After a while, this moving chunk of ice collides with another 4 𝑘𝑔 chunk of ice which is at rest and sticks to it. (a) After the collision, how high above the floor will the combined chunks go? (b) Which quantities are conserved in this problem? Explain
A 70 𝑘𝑔 skier starts to slide from 𝐻 = 25 𝑚 above the jumping ramp as shown in the figure and jumps off the ramp at an angle of 𝜃 = 30° . If the ramp is frictionless and the effect of air resistance is neglected, (a) What is the maximum height ℎ that the skier can reach after jumping off the ramp? (b)If the skier had increased his weight by putting on a backpack, would the height ℎ be higher, lower or remain the same? Explain. (c) If there was air resistance, would the height ℎ be higher, lower or remain the same? Explain. (d) What would ℎ be if the length of the path above the jump point of the ramp (i.e., the part of the path above the dashed line according to the figure) were 𝑑 = 50 𝑚 and the coefficient of the kinetic friction 𝜇𝑘 = 0.2 ?
Figure shows a uniform metal plate of radius 2R from which a disk of radius R has been stamped out (removed). a) Using the x-y coordinate system shown, locate the center of mass of the plate. b) Now the removed disk is welded to the plate as shown in the figure. Find the center of mass of the combined system
A car of mass 500 kg is moving at 24 m/s.a lion of mass 100 kg drops on to the roof of the car from an overhanging branch.show that the car will slow down to 20 m/s
A gymnast bounces vertically upward from a trampoline as shown in figuare the gymnastic leaves the trampoline at a height of 1.20 m and reaches a maximum height of 4.80 m before falling back down all heights are measured with respect of the ground
