Q.4 A bullet of mass 0.05 kg moving with a speed of 400 m/s penetrates 15 cm into a fixed block of wood. The average force exerted by the wood on the bullet will be

Calculate the amount of force needed to break a sample of mullite in 3-point bending with the following geometry (dimensions are in mm). 100 5 Flexural Strength Modulus of Elasticity Material MPa ksi GPa 10º psi Mullite (3Al2O3-2SiO2) 185 27 145 21 7.5

Problem 2.63 The bolt is subjected to the force F, which has components acting along the z. y, z axes as shown. Part A If the magnitude of F is 76 N, and ax=52° and y= 50°, determine the magnitude of Fz component. Express your answer to two significant figures and include the appropriate units. ANSWER: F₂ = 40 N Incorrect; Try Again; 4 attempts remaining Part B Determine the magnitude of Fy component. ANSWER: Fy= your answer to significant figures and inclu the appropriate units. Part C Determine the magnitude of F₂ component. Express your answer to two significant figures and include the appropriate units. ANSWER: F₂ =

A hollow aluminum driveshaft has the dimensions shown and is subjected to the torques shown. If the failure shear strength of the aluminum is 25 ksi, what is the factor of safety for the driveshaft? Give a number with three significant figures for your answer. 326 ft-lb outside dia = 2 in inside dia = 1.5 in 326 ft-lb outside dia = 2 in inside dia = 1.5 in %3D cross-section 6.5 ft