
A boogy board of area 1.0 mA2 slides at a speed of 3.0 m/s over the...
A diver springs upward with an initial speed of 1.92 m/s from a 3.0-m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -3.0 m (measured from the board), assuming that the downward direction is chosen as the negative direction.] (b) What is the highest point he reaches above the water?
A diver springs upward with an initial speed of 1.76 m/s from a 3.0-m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -3.0 m (measured from the board), assuming that the downward direction is chosen as the negative direction.] (b) What is the highest point he reaches above the water?
A block of weight W slides down an inclined plane with a constant velocity V while lubricated by a thin film of a fluid. The film contact area is A and its thickness is h. Assuming a linear velocity distribution in the film, derive an expression for the viscosity ? of the fluid. Calculate the viscosity ? of the fluid if the block mass is 6 kg, A = 35 cm, , ? = 30°, V = 20 m/s and...
A board 1-m by 1-m that weights 25 N slides down an inclined ramp (slope = 20 degree) with a constant velocity of 2.0 cm/s. The board is separated from the ramp by a thin film of oil with a viscosity of 0.05 N-s/m^2. Determine the space (mm) between the board and the ramp.
A block that is a m square slides from left to right across a flat plate on a thin film of oil. The oil has viscosity μ N·s/m2 and the film is h m thick. The block of mass M kg moves at steady speed U m/s under the influence of constant force F N. (a) Find the magnitude of the shear stresses on the bottom of the block. Indicate the direction of the shear stresses on the bottom of...
A 3.0 kg block slides along a horizontal frictionless surface with a speed of 9.8 m/s. The block makes a smooth transition to a frictionless ramp inclined at an angle of 35.0
A diver springs upward with an initial speed of 2.1 m/s from a 3.5-m board. (a) Find the velocity with which he strikes the water. [Hint: When the diver reaches the water, his displacement is y = -3.5 m (measured from the board), assuming that the downward direction is chosen as the negative direction.] m/s (b) What is the highest point he reaches above the water? m
5. What force is needed to pull one microscope slide over another at a speed of 1.00 cm/s, if there is a 0.500-mm-thick layer of 20 degrees C water between them and the contact area is 8.50 cm^2?
1439-140 Fund Mac westion 2 bad mby Im that weighs 25 N slides down an inclined ame(slope 20%) with a velocity of 2.0 m/s. The board is rated from the ramp by a thin film of oil with a viscosity of 0.05 Nm Neelecting edge effects, solve the following questions: 1) Draw the free body diagram of the board and show all the forces acting on this board. 2) In case of equilibrium (constant velocity), what is the shear force?...
5) A copper rod (length L, mass m) slides with speed v over a U-shaped wire inside a constant magnetic field (B). The loop has resistance R. a) Find the magnitude and direction of the induced current in terms of the given quantities and constants. (HINT 1: Area = x L). b) Find the force vector of the copper rod.