A car when passes through a convex bridge exerts a force on it which is equal to-
Suppose that the body exerts a force N on the surface when it travels through the convex surface. The forces on the car is mg downwards and N upwards. Hence the total force mg−N will provide the essential centripetal acceleration to the car. ⇒ mg - N = mv2/R ⇒ N= mg- mv2/R
A towel was 75 cm broad and 120cm long. When bleached, it was to have lost 40% of its length and 20% breadth. The percentage of decrease in area is:
A scored 46% marks and failed by 45 marks whereas B scored 76% marks, which was 75 more than the passing marks of the examination. Find the total marks ...
The value of A’s car is depreciating by 44% every year whereas the value of his house is appreciating by 8% each year as compared to the previous year...
Anchal allocates 20% of his monthly salary to transportation, dedicates 50% to shopping, and invests 20% of the remaining balance in food expenses. The ...
In an election, two candidates A and B participated. 2⁄5 of the voters promised to vote for A and rest promised to vote for B. On the voting day 2...
A man invested all his current month income in starting of a new business in which he spends 40% in advertisement 25% of remaining in furniture 20% of r...
The respective ratio of monthly income of A to monthly income of B is 8:9, and A’s saving is (100/9)% more than B’s saving. Find the expenditure of ...
Rahul saves Rs. 6800 more if he spends 70% of his income instead of 90%. Find the savings of Sumit whose income is 25% more than that of Rahul, and spen...
If a student scores 30% marks then he is failed by 50 marks, but when he scores 50% marks then he is passed by 30 marks. Find the passing %?
In an examination having total 300 questions, in the first section having 180 questions. A student got 75% marks in first section, but he got 80% marks ...
