Laws of Motion [NEET (2024 Updated)-National Eligibility cum Entrance Test (Medical) Physics]: Questions 39 - 42 of 244

Choose Programs:

📹 Video Course 2024 (8 Lectures [3 hrs : 4 mins]): Offline Support

Rs. 100.00 -OR-

1 Month Validity (Multiple Devices)

Preview All LecturesDetails

⏳ 🎯 Online Tests (5 Tests [50 questions each]): NTA Pattern, Analytics & Explanations

Rs. 500.00 -OR-

3 Year Validity (Multiple Devices)

Sample TestsDetailsSee Demo

🎓 Study Material (575 Notes): 2024-2025 Syllabus

Rs. 650.00 -OR-

3 Year Validity (Multiple Devices)

Topic-wise Notes & SampleDetails

🎯 5119 MCQs (& PYQs) with Full Explanations (2024-2025 Exam)

Rs. 750.00 -OR-

3 Year Validity (Multiple Devices)

CoverageDetailsSample Explanation

Help me Choose & Register (Watch Video) Already Subscribed?

Question 39

Question MCQ▾

A particle of mass 3 kg is moving under the action of a central force whose potential energy is given by U (r) = 10r3 joule. For what energy and angular momentum will the orbit be a circle of radius 10 m?

Choices

Choice (4)Response

a.

2.5 × 104 J, 3000 kgm2 /sec

b.

2.5 × 103 I, 300 kgm2 /sec

c.

3.5 × 104 I, 2000 kgm2 /sec

d.

3.5 × 103 J, 300 kgm2 /sec

Edit

Question 40

Question MCQ▾

In figure ABCDE is a channel in the vertical plane, part BCDE being circular with radius r. A ball is released from A and slides without friction and without rolling. It vr ″ - complete the loop path when

Motion Graph Explained by ABCDE

Choices

Choice (4)Response

a.

h > 5r/2

b.

h < 2r/5

c.

h < 5 r/2

d.

h > 2r/5

Edit

Question 41

Question MCQ▾

A boat of mass 1000 kg is moving with a velocity of 8 m/s. A person of mass 70 kg jumps into the boat. The velocity of the boat with the person will be –

Choices

Choice (4)Response

a.

7.71 cm/s

b.

74.8 m/s

c.

7.48 m/s

d.

77.1 cm/s

Edit

Question 42

Question MCQ▾

A string of length L is fixed at one end and carries a mass M at the other end. The string makes 2/tc revolutions per second around the vertical axis through the fixed end as Shown in the figure, then tension in the string is

String Motion of Length L Carrying Mass M

Choices

Choice (4)Response

a.

16 ML

b.

5ML

c.

4 ML

d.

2 ML

Edit