4 kg block moving right at 6 m/s collides elastically with a 3 kg block moving right at 2 m/s. Find the final velocity of the 4kg block

--Determine the maximum force P that can be applied without causing movement of the 90-kg crate that has a center of gravity at G. The coefficient of static friction at the floor is p0.5, as shown in the Figure 10. (20 Marks) Fig. (10) 0.5 m 0.5 m 6.7 m

A cast-iron cannonball is found by a diver on the bottom of a harbor (SG of harbor water = 1.02) . The cannonball has a volume of 0.1 ft3 . The cast-iron has a specific gravity of 7.40. What force (F) is necessary to lift the cannonball off the bottom (find F in lb)? (use specific weight of water = 62.4 lb/ft3 )

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11.3 (A) Calculate the strain energy stored in a bar of circular cross-section, diameter 0.2 m, length 2 m: (a) when subjected to a tensile load of 25 kN, (b) when subjected to a torque of 25 kNm, (c) when subjected to a uniform bending moment of 25 kNm. For the bar material E= 208 GN/m³, G = 80 GN/m². [0.096, 49.7, 38.2 N m.]

From the figure below, determine the reaction force at point O. DE 0.5 m 0.5 m 0.4 m F = 300 N B A 0.3 m 0.2 m 0.1 m y

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15 Refer to the figure, what is the horizontal component of the reaction at pin A in kN? 0.75 kN/m 1.2 O 1.4 1.8 2.0 A 1.5 m | 2 kN D 1.5 m- 2.5 m B 1.5 m 4 kN

b) For the beam structure loaded in Figure 2, calculate the reactions on pin A and roller B. [10 marks] 5kN/m 5kN/m A 4 m 4 m 1.5 m